VizHub Runtime State Machine Diagram
This example visualizes the state machine of the VizHub Runtime Environment as an interactive Mermaid diagram, illustrating four states—IDLE, ENQUEUED, PENDING_CLEAN, and PENDING_DIRTY—and their transitions triggered by code-change events and build completion. Built with the Mermaid library (mermaid.render), it uses a stateDiagram-v2 definition embedded directly in an HTML page, with custom CSS and themeVariables for styling nodes, edges, and gray note boxes. The diagram animates through state transitions on load, conveying the runtime’s logic for handling concurrent code changes during builds.
AI-generated descriptionVizHub Runtime State Machine Diagram
This project visualizes the state machine for the VizHub Runtime Environment. The diagram shows how the runtime handles code changes and manages the build process.
State Machine Description
The VizHub runtime can be in one of four states:
- IDLE - The runtime is not processing any code changes
- ENQUEUED - A code change has been received and is waiting to be processed
- PENDING_CLEAN - The runtime is building code with no additional changes detected
- PENDING_DIRTY - The runtime is building code, but additional changes have been detected
State Transitions
- From IDLE to ENQUEUED: When
handleCodeChange()is called and the state is IDLE - From ENQUEUED to PENDING_CLEAN: When
update()begins processing the code - From PENDING_CLEAN to PENDING_DIRTY: When
handleCodeChange()is called during a build - From PENDING_CLEAN to IDLE: When a build completes with no changes during the build
- From PENDING_DIRTY to ENQUEUED: When a build completes and a new update is scheduled via requestAnimationFrame()
- From ENQUEUED back to PENDING_CLEAN: When the next update begins
This state machine ensures that code changes are properly handled, preventing race conditions and ensuring that the latest changes are always reflected in the final build.